I've used a couple of Simple Machines forums around the internet. Both show my IP address (to me, not everyone else), and says:
"IP Address Account Protection"
Giving me the option of making an extra IP. How exactly does this work? Does this mean I'm untraceable, even if the website can see my IP (which is VPN'd anyway, but you get the gist)?
That forum might have this mod installed: https://custom.simplemachines.org/index.php?mod=2181
Which provides that feature 'IP Account Protection', for login security purposes.